package jdbc;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;

public class JDBCDemo3 {
    public static void main(String[] args) throws SQLException, ClassNotFoundException {
        Class.forName("com.mysql.cj.jdbc.Driver");
        //2
        Connection connection = DriverManager.getConnection(
                "jdbc:mysql://localhost:3306/tedu?characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai&rewriteBatchedStatements=true",
                "root",
                "root");
        System.out.println("与数据库建立连接");
        //3
        Statement statement = connection.createStatement();
        /*
        UPDATE user
        SET password='666666',nickname='老三',age='33'
        WHERE id=1;
         */
        String sql = "UPDATE user\n" +
                     "SET password='666666',nickname='老三',age='33'\n" +
                     "WHERE id=1;";
        int num = statement.executeUpdate(sql);
        if (num>0){
            System.out.println("修改成功");
        }else {
            System.out.println("修改失败");
        }
        connection.close();
    }
}
